<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" /> 
		<script src="js/js/jquery-3.6.0.min.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/js/bootstrap.bundle.js" type="text/javascript" charset="utf-8"></script>
	</head>
	<body>
		<div class="container">
			<div class="dropdown">
				<!-- 触发器 -->
				<button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown">web前端开发技术</button>
				<!-- 下拉的菜单menu -->
				<div class="dropdown-menu">
					<a href="#" class="dropdown-item">HTML5</a>
					<a href="#" class="dropdown-item">CSS</a>
					<a href="#" class="dropdown-item">JavaScript</a>
				</div>
			</div>
			<div class="dropright my-3">
				<!-- 触发器 -->
				<button type="button" class="btn btn-success dropdown-toggle-split" data-toggle="dropdown">web前端开发技术</button>
				<!-- 下拉的菜单menu -->
				<div class="dropdown-menu">
					<a href="#" class="dropdown-item active">HTML5</a>
					<a href="#" class="dropdown-item">CSS</a>
					<a href="#" class="dropdown-item disabled">JavaScript</a>
				</div>
			</div>
		</div>
			<div class="container">
				<div class="dropdown">
					<!-- 触发器 -->
					<button type="button" class="btn btn-info dropdown-toggle my-3" data-toggle="dropdown">下拉菜单</button>
					<!-- 下拉的菜单menu -->
					<div class="dropdown-menu">
						<h6 class="dropdown-header">菜单标题1</h6>
						<a href="#" class="dropdown-item">红烧牛肉</a>
						<a href="#" class="dropdown-item">老坛酸菜</a>
						<h6 class="dropdown-header">菜单标题2</h6>
						<a href="#" class="dropdown-item">酸豆角</a>
						<a href="#" class="dropdown-item">金汤肥牛</a>
					</div>
				</div>
				<div class="dropdown my-3">
					<!-- 触发器 -->
					<button type="button" class="btn btn-warning dropdown-toggle my-3" data-toggle="dropdown">下拉菜单</button>
					<!-- 下拉的菜单的菜单 -->
					<div class="dropdown-menu">
						<p>下面显示一个表单</p>
						<form action="zhuce.php" method="post">
							<div class="form-group">
								<label for="mail">E-mail</label>
								<input type="email" name="mail" id="mail" placeholder="请输入邮箱" class="form-control">
							</div>
							<div class="form-group">
								<label for="ps">password</label>
								<input type="password" name="ps" id="ps" placeholder="请输入邮箱" class="form-control">
							</div>
							<div class="text-right">
								<button type="button" class="btn btn-success">登录</button>
							</div>
						</form>
					</div>
				</div>
			</div>
	</body>
</html>
